5 years ago
Water Could Have Drowned the Earth If Not for Ancient Supernova
All of Earth might be under water if not for a fortuitously timed supernova explosion, a new study suggests. A massive star in our sun's neighborhood met its violent end just as Earth and its fellow planets were coalescing 4.6 billion years ago. The blast seeded our nascent solar system with radioactive elements, including aluminum-26 (Al-26), which then heated and dried out the rocky building blocks known as planetesimals, according to the new modeling research.
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